FABO Website issue with width

I am seeing an issue with the width of the comments box, but it is only on threads with more than one page.

for example;
http://www.forabodiesonly.com/mopar/showthread.php?t=296698&page=1 is fine, the box is the right width to read the comments.

http://www.forabodiesonly.com/mopar/showthread.php?t=296698&page=2 not so much, the box is double the width as page 1 and a left-right scroll bar appears at the bottom